. Author manuscript; available in PMC: 2012 Jan 9.

Published in final edited form as: Stat Med. 2010 Oct 20;29(29):3017–3029. doi: 10.1002/sim.4076

Table 4.

Posterior estimates of regression coefficients and 95% credible intervals from models for covariates with missing data: percent change in body weight (linear regression), chemotherapy treatment, tumor size, ER and PR status (logistic regressions) from selection model under NMAR assumption for all-cause mortality in the Long Island Breast Cancer Study Project.

			Posterior estimate of α (95% credible interval)

			Percent change in bodyweight
Variable			At diagnosis	1-year after diagnosis	At follow-up interview

Constant			15.00 (10.79, 19.17)	7.79 (3.77, 11.87)	15.13 (10.24, 19.94)

Age			−0.13 (−0.20, −0.05)	−0.10 (−0.16, −0.03)	−0.17 (−0.25, −0.09)

Chemotherapy treatment			−1.04 (−2.23, 0.13)	−0.04 (−1.13, 1.05)	−0.82 (−2.11, 0.48)

Postmenopausal at diagnosis			1.47 (−0.12, 3.06)	−0.87 (−2.39, 0.64)	−0.05 (−1.84, 1.78)

BMI 1-year before diagnosis			−0.43 (−0.53, −0.33)	−0.03 (−0.13, 0.07)	−0.11 (−0.22, 0.01)

Percent weight change at diagnosis^a			–	0.77 (0.70, 0.84)	0.63 (0.54, 0.72)

Percent weight change 1-year after diagnosis^a			–	–	0.12 (0.00, 0.23)

Precision (τ)			0.017 (0.015, 0.020)	0.021 (0.019, 0.023)	0.013 (0.012, 0.014)

Variable		Chemotherapy treatment	Tumor size > 2cm	ER positive tumor	PR positive tumor

Constant		4.23 (3.16, 5.39)	0.60 (−0.40, 1.60)	−0.47 (−1.12, 0.20)	0.79 (0.17, 1.40)

Age		−0.07 (−0.09, −0.06)	−0.02 (−0.04, −0.01)	0.03 (0.01, 0.04)	0.00 (−0.01, 0.01)

Income
	$20,000–49,999	−0.21 (−0.76, 0.35)	−0.43 (−0.94, 0.09)	–	–

	$50,000–89,999	−0.35 (−0.95, 0.24)	−0.65 (−1.22, −0.08)	–	–

	≥$90,000	−0.23 (−0.88, 0.41)	−0.41 (−1.03, 0.22)	–	–

Education
	Some college	−0.15 (−0.50, 0.21)	−0.04 (−0.42, 0.34)	–	–

College graduate		−0.26 (−0.73, 0.20)	0.03 (−0.47, 0.52)	–	–

	Post-college	−0.13 (−0.56, 0.30)	0.02 (−0.47, 0.50)	–	–

Coded as continuous variable.